Protect a PDF

Add a password to your PDF to restrict who can open it.

Your files stay on your device.

The most robust encryption standard.

No limits, no sign-up.

Add a PDF file

Drag and drop your PDF file here

One file at a time

Click the button to encrypt your PDF with this password.

No file is ever sent to our servers.

What happens if I forget the password?

The file can never be opened again. There is no backdoor in the encryption: keep the password somewhere safe.

Is my file sent to a server?

No. Encryption happens entirely in your browser: your PDF never leaves your device.

What kind of encryption is used?

AES-256 encryption, the current strongest standard for password-protecting PDFs.

Can I restrict printing or copying text?

This tool focuses on password protection for opening the file. Advanced permission restrictions are not offered yet.

Merge, split, compress, and much more.

Your files never leave your device.

Protect your PDFs in just a few seconds.

Use all our PDF tools without creating an account.

Works on all your devices: PC, Mac, tablet, mobile.